Question

What system of economics was developed during the fall of feudalism and used strict governmental regulation of a national economy? Socialism Communism feudalism mercantilism

Answer 1

It is socialism, in all probability.

Answer 2

the system of economics that was developed during the fall of feudalism and used strict governmental regulation of a national economy is: Communism
In a communist system, all business entities are controlled by the government. The citizen basically has no right to choose their own job because the government will assign each of them based on their unique criteria.